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4dbpsk系统的设计实现源码，几个朋友用一个假期的时间协作完成，功能非常好(The 4dbpsk system design realization source code, several friends complete it cooperation in one vacation time , the function is extremely good)

二维，ＦＤＴＤ，ｐｍｌ，ｍａｔｌａｂ语言。(Two-dimensional, FDTD, pml, matlab language.)

基于matlab的利用rssi对无线传感网络的定位(Wireless sensor networks based on the matlab the use of rssi positioning)

光子晶体的能带图计算，其实质就是电磁本征值（复矢量场）的问题。利用平面波展开磁场，引入f(r)=1/eps(r)，再利用倒格矢G将f(r)展开，将两者代入光子晶体的支配方程，最后得到一个平面波展开的方法的线性方程组，最终转化为求解其特征值向量的问题。(Energy band diagram of the photonic crystal, its essence is the electromagnetic eigenvalues ​ ​ (complex vector field).The linear plane wave expansion magnetic field, the introduction of f (r) = 1/eps (r), re-use reciprocal lattice vector G will expand f (r), the two substituted into the governing equations of the photonic crystal, and finally get a plane wave expansionequations, and ultimately into solving the problem of its eigenvalues​ ​ .)

PMSM双闭环控制，速度环采用自抗扰控制，电流环PI控制(PMSM double closed loop control, speed loop using auto disturbance rejection control, current loop PI control)

matlab做的图像检索源码，算法实现不错，很有借鉴作用，对初学者更是适用。(matlab source code to do image retrieval algorithm to achieve good, very useful reference for beginners it is applicable.)

几篇学习光纤陀螺误差补偿有用的文献,相信对大家有用。(Some useful papers of FOG. )

SMPP Protocol version 3.4

说明：  利用差分法，将数据拟合，从而可以更好的辨识非线性系统的损失位置。(By using the difference method and fitting the data, the loss location of the non-linear system can be identified better.)

GSM中GMSK调制信号的产生，包括脚本文件和函数文件形式(GSM GMSK modulation in the signal generation, including the form of script files and function files)